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2.30 In the circuit of Fig. P2.30 let Vcc = 12 V, V, = 6 V, R, = 33 kN, R, = 3.0 kN, and R, = 2.0 kN. Moreover, let BrI 0.7 V, and VECI(sa) = VCE2sa) = 0.1 V. (a) Find R, so that I = 1.5 mA. (b) Look at your calculations again, and identify the = Bm = 50, VERI(on) = VR BE2(on) cases in which base currents could have been ignored to speed up calculations, and those in which they couldn't. Recalculate using these approximations, compare, and comment. Vcc R13 R2 Qi V1 Q2 R3 RA FIGURE P2.30

2.30 In the circuit of Fig. P2.30 let Vcc = 12 V, V, = 6 V, R, = 33 kN, R, = 3.0 kN, and R, = 2.0 kN. Moreover, let BrI 0.7 V, and VECI(sa) = VCE2sa) = 0.1 V. (a) Find R, so that I = 1.5 mA. (b) Look at your calculations again, and identify the = Bm = 50, VERI(on) = VR BE2(on) cases in which base currents could have been ignored to speed up calculations, and those in which they couldn't. Recalculate using these approximations, compare, and comment. Vcc R13 R2 Qi V1 Q2 R3 RA FIGURE P2.30

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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2.30
2.30 In the circuit of Fig. P2.30 let Vcc = 12 V, V, = 6 V, R, = 33 kN, R, = 3.0 kN, and R, = 2.0 kN. Moreover, let Bfi = Br2 = 50, VEBI(on) = VBE2(on) 0.7 V, and Veci(sat) (a) Find R, so that Ic = 1.5 mA. (b) Look at your calculations again, and identify the VCE2(sa) = 0.1 V. cases in which base currents could have been ignored to speed up calculations, and those in which they couldn’t. Recalculate using these approximations, compare, and comment. Vcc R1 R2 Qi Q2 V1 S R3 RA FIGURE P2.30
Transcribed Image Text:2.30 In the circuit of Fig. P2.30 let Vcc = 12 V, V, = 6 V, R, = 33 kN, R, = 3.0 kN, and R, = 2.0 kN. Moreover, let Bfi = Br2 = 50, VEBI(on) = VBE2(on) 0.7 V, and Veci(sat) (a) Find R, so that Ic = 1.5 mA. (b) Look at your calculations again, and identify the VCE2(sa) = 0.1 V. cases in which base currents could have been ignored to speed up calculations, and those in which they couldn’t. Recalculate using these approximations, compare, and comment. Vcc R1 R2 Qi Q2 V1 S R3 RA FIGURE P2.30
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